#define   _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>

int main()
{
	int killer = 0;
	for (killer = 'A'; killer <= 'D'; killer++)
	{
		if (3 == (killer != 'A') + (killer == 'C') + (killer == 'D') + (killer != 'D'))
		{
			printf("killer = %c", killer);
		}
	}

	return 0;
}